Public water system · IL0150030
ActiveThomson Maximum Security Center
At a glance
Thomson Maximum Security Center (PWSID IL0150030) is an active community water system in Carroll County, Illinois. It reports serving 2,166 people through 15 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by the federal government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,166
Service connections
15
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Thomson Maximum Security Center compare with other water systems in Carroll County?
By EPA's size categories, Thomson Maximum Security Center is a small system (501 to 3,300 people). Carroll County has 35 active public water systems, and Thomson Maximum Security Center is the 2nd-largest of them by population served. Its population served is about 5.6 times the county average of 384 people per system, and accounts for 16% of the 13,444 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Thomson Maximum Security Center is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.
Who owns and regulates Thomson Maximum Security Center?
EPA lists Thomson Maximum Security Center as owned by the federal government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 35 active systems in Carroll County (2.9%) are also owned by the federal government.
Does Thomson Maximum Security Center have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Thomson Maximum Security Center. For the latest compliance status, check EPA ECHO for current compliance history.
Thomson Maximum Security Center: frequently asked questions
Who runs Thomson Maximum Security Center?
Thomson Maximum Security Center (PWSID IL0150030) is a community water system owned by the federal government. It is regulated by the IL state drinking water program.
How many people does Thomson Maximum Security Center serve?
Thomson Maximum Security Center reports serving 2,166 people through 15 service connections in Carroll County, Illinois.
Where does Thomson Maximum Security Center get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Thomson Maximum Security Center have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Thomson Maximum Security Center's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Thomson Maximum Security Center's water quality report?
As a community water system, Thomson Maximum Security Center must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Savanna | Carroll | 3,020 | Community | Groundwater |
| Lanark | Carroll | 1,504 | Community | Groundwater |
| Mount Carroll | Carroll | 1,479 | Community | Groundwater |
| Milledgeville | Carroll | 989 | Community | Groundwater |
| Shannon | Carroll | 801 | Community | Groundwater |
| Thomson | Carroll | 580 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Thomson Maximum Security Center, PWSID IL0150030, Illinois”, https://aquacensus.com/water-systems/illinois/thomson-maximum-security-center-il0150030 (data as of October 1, 2026).